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/*
* Copyright (c) 2006-2022, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2021-01-04 iysheng first version
* 2021-09-07 FuC Suit for Vango V85XX
* 2021-09-12 ZhuXW fix UART5
*/
#include <target.h>
#include <drv_usart.h>
#include <board.h>
#ifdef RT_USING_SERIAL
#if !defined(BSP_USING_UART0) && !defined(BSP_USING_UART1) && \
!defined(BSP_USING_UART2) && !defined(BSP_USING_UART3) && \
!defined(BSP_USING_UART4) && !defined(BSP_USING_UART5)
#error "Please define at least one UARTx"
#endif
#include <rtdevice.h>
static void uart_isr(struct rt_serial_device *serial);
#if defined(BSP_USING_UART0)
struct rt_serial_device serial0;
void UART0_IRQHandler(void)
{
/* enter interrupt */
rt_interrupt_enter();
uart_isr(&serial0);
/* leave interrupt */
rt_interrupt_leave();
}
#endif /* BSP_USING_UART0 */
#if defined(BSP_USING_UART1)
struct rt_serial_device serial1;
void UART1_IRQHandler(void)
{
/* enter interrupt */
rt_interrupt_enter();
uart_isr(&serial1);
/* leave interrupt */
rt_interrupt_leave();
}
#endif /* BSP_USING_UART1 */
#if defined(BSP_USING_UART2)
struct rt_serial_device serial2;
void UART2_IRQHandler(void)
{
/* enter interrupt */
rt_interrupt_enter();
uart_isr(&serial2);
/* leave interrupt */
rt_interrupt_leave();
}
#endif /* BSP_USING_UART2 */
#if defined(BSP_USING_UART3)
struct rt_serial_device serial3;
void UART3_IRQHandler(void)
{
/* enter interrupt */
rt_interrupt_enter();
uart_isr(&serial3);
/* leave interrupt */
rt_interrupt_leave();
}
#endif /* BSP_USING_UART3 */
#if defined(BSP_USING_UART4)
struct rt_serial_device serial4;
void UART4_IRQHandler(void)
{
/* enter interrupt */
rt_interrupt_enter();
uart_isr(&serial4);
/* leave interrupt */
rt_interrupt_leave();
}
#endif /* BSP_USING_UART4 */
#if defined(BSP_USING_UART5)
struct rt_serial_device serial5;
void UART5_IRQHandler(void)
{
/* enter interrupt */
rt_interrupt_enter();
uart_isr(&serial5);
/* leave interrupt */
rt_interrupt_leave();
}
#endif /* BSP_USING_UART4 */
static const struct V85xx_uart uarts[] =
{
#ifdef BSP_USING_UART0
{
UART0, /* uart peripheral index */
UART0_IRQn, /* uart iqrn */
&serial0,
"uart0",
},
#endif
#ifdef BSP_USING_UART1
{
UART1, /* uart peripheral index */
UART1_IRQn, /* uart iqrn */
&serial1,
"uart1",
},
#endif
#ifdef BSP_USING_UART2
{
UART2, /* uart peripheral index */
UART2_IRQn, /* uart iqrn */
&serial2,
"uart2",
},
#endif
#ifdef BSP_USING_UART3
{
UART3, /* uart peripheral index */
UART3_IRQn, /* uart iqrn */
&serial3,
"uart3",
},
#endif
#ifdef BSP_USING_UART4
{
UART4, /* uart peripheral index */
UART4_IRQn, /* uart iqrn */
&serial4,
"uart4",
},
#endif
#ifdef BSP_USING_UART5
{
UART5, /* uart peripheral index */
UART5_IRQn, /* uart iqrn */
&serial5,
"uart5",
},
#endif
};
static rt_err_t V85xx_configure(struct rt_serial_device *serial, struct serial_configure *cfg)
{
struct V85xx_uart *uart;
UART_TypeDef *UARTx;
UART_InitType UART_InitParaStruct = {0};
UART_StructInit(&UART_InitParaStruct);
RT_ASSERT(serial != RT_NULL);
RT_ASSERT(cfg != RT_NULL);
uart = (struct V85xx_uart *)serial->parent.user_data;
UARTx = (UART_TypeDef *)uart->uart_periph;
UART_InitParaStruct.Baudrate = cfg->baud_rate;
switch (cfg->data_bits)
{
case DATA_BITS_9:
UART_InitParaStruct.WordLen = UART_WORDLEN_9B;
break;
default:
UART_InitParaStruct.WordLen = UART_WORDLEN_8B;
break;
}
switch (cfg->parity)
{
case PARITY_ODD:
UART_InitParaStruct.Parity = UART_PARITY_ODD;
break;
case PARITY_EVEN:
UART_InitParaStruct.Parity = UART_PARITY_EVEN;
break;
default:
UART_InitParaStruct.Parity = UART_PARITY_NONE;
break;
}
UART_InitParaStruct.Mode = UART_MODE_RX | UART_MODE_TX;
UART_Init(UARTx, &UART_InitParaStruct);
UART_Cmd(UARTx, UART_InitParaStruct.Mode, ENABLE);
return RT_EOK;
}
static rt_err_t V85xx_control(struct rt_serial_device *serial, int cmd, void *arg)
{
struct V85xx_uart *uart;
UART_TypeDef *UARTx;
RT_ASSERT(serial != RT_NULL);
uart = (struct V85xx_uart *)serial->parent.user_data;
UARTx = (UART_TypeDef *)uart->uart_periph;
switch (cmd)
{
case RT_DEVICE_CTRL_CLR_INT:
/* disable rx irq */
NVIC_DisableIRQ(uart->irqn);
/* disable interrupt */
UART_INTConfig(UARTx, UART_INT_RX, DISABLE);
break;
case RT_DEVICE_CTRL_SET_INT:
/* enable rx irq */
NVIC_EnableIRQ(uart->irqn);
/* enable interrupt */
UART_INTConfig(UARTx, UART_INT_RX, ENABLE);
break;
}
return RT_EOK;
}
static int V85xx_putc(struct rt_serial_device *serial, char ch)
{
struct V85xx_uart *uart;
RT_ASSERT(serial != RT_NULL);
uart = (struct V85xx_uart *)serial->parent.user_data;
UART_SendData((UART_TypeDef *)uart->uart_periph, ch);
while ((UART_GetFlag((UART_TypeDef *)uart->uart_periph, UART_FLAG_TXDONE) == RESET));
UART_ClearFlag((UART_TypeDef *)uart->uart_periph, UART_FLAG_TXDONE);
return 1;
}
static int V85xx_getc(struct rt_serial_device *serial)
{
int ch;
struct V85xx_uart *uart;
RT_ASSERT(serial != RT_NULL);
uart = (struct V85xx_uart *)serial->parent.user_data;
ch = -1;
if (UART_GetFlag((UART_TypeDef *)uart->uart_periph, UART_FLAG_RXFULL) != RESET)
ch = UART_ReceiveData((UART_TypeDef *)uart->uart_periph);
return ch;
}
/**
* Uart common interrupt process. This need add to uart ISR.
*
* @param serial serial device
*/
static void uart_isr(struct rt_serial_device *serial)
{
struct V85xx_uart *uart = (struct V85xx_uart *) serial->parent.user_data;
RT_ASSERT(uart != RT_NULL);
if ((UART_GetINTStatus((UART_TypeDef *)uart->uart_periph, UART_INTSTS_RX) != RESET) &&
(UART_GetFlag((UART_TypeDef *)uart->uart_periph, UART_FLAG_RXFULL) != RESET))
{
rt_hw_serial_isr(serial, RT_SERIAL_EVENT_RX_IND);
/* Clear RXNE interrupt flag */
UART_ClearINTStatus((UART_TypeDef *)uart->uart_periph, UART_INTSTS_RX);
}
}
static const struct rt_uart_ops V85xx_uart_ops =
{
V85xx_configure,
V85xx_control,
V85xx_putc,
V85xx_getc,
};
int V85xx_hw_usart_init(void)
{
struct serial_configure config = RT_SERIAL_CONFIG_DEFAULT;
int i;
for (i = 0; i < sizeof(uarts) / sizeof(uarts[0]); i++)
{
uarts[i].serial->ops = &V85xx_uart_ops;
uarts[i].serial->config = config;
/* register UART device */
rt_hw_serial_register(uarts[i].serial,
uarts[i].device_name,
RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_INT_RX,
(void *)&uarts[i]);
}
return 0;
}
INIT_BOARD_EXPORT(V85xx_hw_usart_init);
#endif
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